How to Kill Algae in a Pool Filter

By Contributor; Updated September 21, 2017

When you first buy a sparkling new swimming pool, the last thing you want is to look out your window and see a colony of algae growing in your pool. Pool algae comes in many different colors and forms. The most common type of pool algae is green. Before you worry about removing this algae from your pool, clean the pool filter.

Flush water through your filter system on a regular basis. You know that it's time to have your filter cleaned when the pool water pressure doesn't drop down to it's normal range.

Rinse loose dirt and debris from the filter. Rinse gently with water because spraying the filter too hard can lead to further clogs.

Soak the pool filter overnight in an alkaline based cleansing solution. Rinse the filter with water to remove any chemicals before you place the filter in the pool again.

Obtain a bottle of liquid chlorine to pour into the pool. Tip the container of chlorine over in front of a main jet and allow a few gallons to pour out.

Walk away from the pool for 15 minutes. If the algae looks considerably lighter when you return, you've added enough chlorine. If the algae is still quite visible, add a few more gallons of chlorine.

Keep the pool filter running during this process. The filter must run until the water clears. These methods should result in both a clean pool and a clean pool filter.

Tip

Clean your pool on a regular basis to prevent algae from colonizing in the pool or on your pool filter. Begin this cleaning process by brushing your pool's walls and floor with a pool brush.

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